There are 12 words that end with 'plasts'.
| cytoplasts | periplasts |
| tonoplasts | amyloplasts |
| leucoplasts | protoplasts |
| chloroplasts | chromoplasts |
| kinetoplasts | spheroplasts |
| phragmoplasts | blepharoplasts |
Note: These 12 words that end with 'plasts' are found from the USA & Canada version of the tournament Scrabble word list.